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/* Philips PCF50606 Input Driver
*
* (C) 2006-2008 by Openmoko, Inc.
* Author: Balaji Rao <balajirrao@openmoko.org>
* All rights reserved.
*
* Broken down from monstrous PCF50606 driver mainly by
* Harald Welte, Matt Hsu, Andy Green and Werner Almesberger
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/mfd/pcf50606/core.h>
#define PCF50606_OOCS_ONKEY 0x01
#define PCF50606_OOCS_EXTON 0x02
#define PCF50606_OOCC2_ONKEYDB_NONE 0x00
#define PCF50606_OOCC2_ONKEYDB_14ms 0x01
#define PCF50606_OOCC2_ONKEYDB_62ms 0x02
#define PCF50606_OOCC2_ONKEYDB_500ms 0x03
#define PCF50606_OOCC2_EXTONDB_NONE 0x00
#define PCF50606_OOCC2_EXTONDB_14ms 0x04
#define PCF50606_OOCC2_EXTONDB_62ms 0x08
#define PCF50606_OOCC2_EXTONDB_500ms 0x0c
#define PCF50606_REG_OOCS 0x01
struct pcf50606_input {
struct pcf50606 *pcf;
struct input_dev *input_dev;
};
static void
pcf50606_input_irq(int irq, void *data)
{
struct pcf50606_input *input;
int onkey_released;
input = data;
onkey_released = pcf50606_reg_read(input->pcf, PCF50606_REG_OOCS) &
PCF50606_OOCS_ONKEY;
if (irq == PCF50606_IRQ_ONKEYF && !onkey_released)
input_report_key(input->input_dev, KEY_POWER, 1);
else if (irq == PCF50606_IRQ_ONKEYR && onkey_released)
input_report_key(input->input_dev, KEY_POWER, 0);
input_sync(input->input_dev);
}
static int __devinit pcf50606_input_probe(struct platform_device *pdev)
{
struct pcf50606_input *input;
struct pcf50606_subdev_pdata *pdata = pdev->dev.platform_data;
struct input_dev *input_dev;
int ret;
input = kzalloc(sizeof(*input), GFP_KERNEL);
if (!input)
return -ENOMEM;
input_dev = input_allocate_device();
if (!input_dev) {
kfree(input);
return -ENOMEM;
}
platform_set_drvdata(pdev, input);
input->pcf = pdata->pcf;
input->input_dev = input_dev;
input_dev->name = "PCF50606 PMU events";
input_dev->id.bustype = BUS_I2C;
input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_PWR);
set_bit(KEY_POWER, input_dev->keybit);
ret = input_register_device(input_dev);
if (ret) {
input_free_device(input_dev);
kfree(input);
return ret;
}
pcf50606_register_irq(pdata->pcf, PCF50606_IRQ_ONKEYR,
pcf50606_input_irq, input);
pcf50606_register_irq(pdata->pcf, PCF50606_IRQ_ONKEYF,
pcf50606_input_irq, input);
return 0;
}
static int __devexit pcf50606_input_remove(struct platform_device *pdev)
{
struct pcf50606_input *input = platform_get_drvdata(pdev);
input_unregister_device(input->input_dev);
pcf50606_free_irq(input->pcf, PCF50606_IRQ_ONKEYR);
pcf50606_free_irq(input->pcf, PCF50606_IRQ_ONKEYF);
kfree(input);
return 0;
}
static struct platform_driver pcf50606_input_driver = {
.driver = {
.name = "pcf50606-input",
},
.probe = pcf50606_input_probe,
.remove = __devexit_p(pcf50606_input_remove),
};
static int __init pcf50606_input_init(void)
{
return platform_driver_register(&pcf50606_input_driver);
}
module_init(pcf50606_input_init);
static void __exit pcf50606_input_exit(void)
{
platform_driver_unregister(&pcf50606_input_driver);
}
module_exit(pcf50606_input_exit);
MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
MODULE_DESCRIPTION("PCF50606 input driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pcf50606-input");
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